Improvement in journal-bearings



C. C. HOYT.

JOURNAL BEARINGS.

No.17v9,115. Patented Jun'e 27,1875.

Jl A L L A ET WITNE SSE S'.

INVENTOR: M

FW f UNITE STATES AT NT CHARLES C. HOYT, OF ST. LOUIS, MISSOURI.

IMPROVEMENT IN JOURNAL-BEARINGS.

Specification forming part of Letters Patent No. 179, 115, dated June 27, 1876; application tiled April 7, 181e.

To all whom -it may concern:

Be it known that I, CHARLES C. HOYT, of St. Louis, Missouri,have invented an Improved Box or Bearing,` for Shafting and Axle Jour nals, of which the following is a speciication:`\l

This invention consists in forming the bearingsurfaces for shafts, axles, mandrels, and the like, in their boxes, journal-bearings, &c., in such wise as to greatly reduce wear and friction, and consequent heating; and the nature of this invention consists in providing` said journal-boxes and the like with a solid bearing-surface of mica.

Ot' the drawing", Figures l and 3 are top plans of respective methods of applying` mica in a sectional form, or to entirely cover the bearing-surface, the former being shown in Fig. l, the latter in Fig. 3. Figs. 2 and 4 are respective sectional elevations of Figs. l and 3, taken on line x x and w Fig. 5 is an end elevation.

A represents a boxing,` or bearing to receive the shat'ting, axle, &c.

As stated to be the nature of my invention, the bearing-surface I form to consist otmica, and can be either applied in a sectional manner, or wholly made to cover the required bearing.

I provide the boxing` A with Babbitt metal a, so as to form a seat or bed,in which the mica is to be introduced and embedded.

As shown in Figs. l and 2, the Babbitt metal a forms part of the bearing-surface, and the mica, in sections b, isvembedded in said Babbitt metal, so that said mica sections at top shall be flush, and with the Babbitt metal form the required bearing-surface. To receive the mica b the Babbitt metal presents a mortise, (see Fig. 2,) or has formed therein a deepening or recess, in which the sections ot'lnica are seated and held fast, their top surface being on line with that of the surrounding metal. (See FiO. l.) In this way vthe bearingsurface is partly mica and Babbitt metal.

As statednthe bearing-surface can be entirely of mica. Hence, the Babbitt metal is employed to form the required mold or matrix in which the mica is introduced and embedded. Thus, in Fig. 4, the metal A is applied so as to receive top of same the mic-.t b, which extends wholly over the bearingsurface.

The ends of the bearing` presented'is b v the metal a, while upon the surface of the mica b the revolvingI action takes place. Further, the Babbitt metal can have bearing in the ends b of the housing A, and thus virtually envelops the mica, leaving simply the latter to present orexpose its surface to the action ot' the shafting, &c. In this wise the mica is firmly and secure-ly held in place, and cannot possibly disengage itself out of the metal.

The mica surface and bearings thus formed are smooth, comparatively i'rictionless, and Wear slowly without heating. The properties ot' the mica being to cool quickly, act as a non-conductor ot' heat, remain free from grit, and, being also oily, specially adapt said material for the purposes above named.

During wear the powdered or small particles of mica fill up the crevices and iutcrstices in the metal, and thus still subserve the purpose ot' giving a glazed and improved bearinglsur face. 1

What I claim isfl. Ajournal-box provided with a solid bearing-surface of mica, as and for the purposes set forth.

2. The bearing-surface of mica with relation to Babbitt metal as its seat, as and for the purposes set forth.

In testimony of said invention I have hereunto set my hand.

CHA S. C. HOYT.

Witnesses:

WILLIAM W. HERTHEL, CHAs. F. MEIsNER. 

